Producer gas production

Producer gas is a low calorific value fuel gas comprising of mainly carbon monoxide, hydrogen and nitrogen. It is produced by passing air or a mixture of air and steam through a burning bed of solid fuel such as, coal, coke, wood or biomass. Hydrogen is also present in a significant amount in the producer gas. The exact composition of producer gas depends on the type of fuel, composition of the blast and operating condition. Producer gas is formed in a gasifier, called gas producer.

The overall reaction in the process as follows:

Biomass + Sub-stoichiometric oxygen ->Fuel gas (H2, N2, CO, CO2 & CH4).

Fig. Modified engine run on producer gas (sources TERI, 2016).

Table: Composition of producer gas from woody biomass

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